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namespace Caribou {
[DBus(name = "org.gnome.Caribou.Keyboard")]
interface Keyboard : Object {
public abstract void set_cursor_location (int x, int y, int w, int h)
throws IOError;
public abstract void set_entry_location (int x, int y, int w, int h)
throws IOError;
public abstract void show (uint32 timestamp) throws IOError;
public abstract void hide (uint32 timestamp) throws IOError;
}
class GtkModule {
private GLib.HashTable<Gtk.Window, bool> windows;
private Keyboard keyboard;
private Gdk.Display display;
public GtkModule () {
windows = new GLib.HashTable<Gtk.Window, bool> (null, null);
display = Gdk.Display.get_default ();
Bus.get_proxy.begin<Keyboard> (BusType.SESSION, "org.gnome.Caribou.Keyboard",
"/org/gnome/Caribou/Keyboard", 0, null, callback);
}
private void callback (GLib.Object? obj, GLib.AsyncResult res) {
try {
keyboard = Bus.get_proxy.end(res);
}
catch (Error e) {
stderr.printf ("%s\n", e.message);
return;
}
Gdk.window_add_filter (null, event_filter);
// Something might already be focused
GLib.List<weak Gtk.Window> toplevels = Gtk.Window.list_toplevels();
foreach (weak Gtk.Window w in toplevels) {
if (w.has_toplevel_focus) {
do_focus_change (w.get_focus ());
break;
}
}
}
private Gdk.FilterReturn event_filter (Gdk.XEvent xevent, Gdk.Event evt) {
Gdk.Window? gdkwindow;
void* data;
Gtk.Window window;
#if GTK2
void* pointer = &xevent;
X.Event* xev = (X.Event *) pointer;
gdkwindow = (Gdk.Window) Gdk.x11_xid_table_lookup_for_display (display, (X.ID) xev.xany.window);
#else
gdkwindow = evt.any.window;
#endif
if (gdkwindow == null ||
gdkwindow.get_window_type () != Gdk.WindowType.TOPLEVEL)
return Gdk.FilterReturn.CONTINUE;
Gdk.window_get_user_data (gdkwindow, out data);
if (data == null || !(data is Gtk.Window))
return Gdk.FilterReturn.CONTINUE;
window = (Gtk.Window *) data;
if (!windows.lookup (window)) {
windows.insert (window, true);
window.notify["has-toplevel-focus"].connect (toplevel_focus_changed);
window.set_focus.connect (window_focus_changed);
window.destroy.connect (() => { windows.remove (window); });
}
return Gdk.FilterReturn.CONTINUE;
}
private void toplevel_focus_changed (Object obj, ParamSpec prop) {
Gtk.Window window = (Gtk.Window) obj;
if (window.has_toplevel_focus)
do_focus_change (window.get_focus ());
}
private void window_focus_changed (Gtk.Window window,
Gtk.Widget? widget) {
do_focus_change (widget);
}
private void do_focus_change (Gtk.Widget? widget) {
#if GTK2
uint32 timestamp = Gdk.x11_display_get_user_time (display);
#else
uint32 timestamp = Gdk.X11Display.get_user_time (display);
#endif
if ((widget is Gtk.Editable &&
((Gtk.Editable) widget).get_editable ()) ||
(widget is Gtk.TextView &&
((Gtk.TextView) widget).get_editable ())) {
Gdk.Window current_window = widget.get_window ();
Atk.Object object = widget.get_accessible ();
int x = 0, y = 0, w = 0, h = 0;
int caret_offset = 0;
if (object is Atk.Text) {
caret_offset = ((Atk.Text) object).get_caret_offset ();
Atk.get_character_extents ((Atk.Text) object, caret_offset, out x, out y, out w, out h, Atk.CoordType.SCREEN);
}
else {
if (current_window != null)
get_origin_geometry (current_window, out x, out y, out w, out h);
}
try {
keyboard.show (timestamp);
keyboard.set_cursor_location (x, y, w, h);
} catch (IOError e) {
stderr.printf ("%s\n", e.message);
}
} else {
try {
keyboard.hide (timestamp);
} catch (IOError e) {
stderr.printf ("%s\n", e.message);
}
}
}
private void get_origin_geometry (Gdk.Window window,
out int x, out int y,
out int w, out int h) {
window.get_origin (out x, out y);
#if GTK2
window.get_geometry (null, null, out w, out h, null);
#else
window.get_geometry (null, null, out w, out h);
#endif
}
public void unload () {
Gdk.window_remove_filter(null, event_filter);
foreach (Gtk.Window window in windows.get_keys ())
window.notify["has-toplevel-focus"].disconnect (toplevel_focus_changed);
}
}
}
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